jackdawEnglishOxford Dictionary of Englishjackdaw /ˈdʒakdɔː / ▸ noun a small grey-headed crow that typically nests in tall buildings and chimneys, noted for its inquisitiveness. Genus Corvus, family Corvidae: two species, in particular the Eurasian C. monedula. – ORIGIN mid 16th century: from jack1 + daw.